Averages hide the corner that hurts people
A floor that is comfortable on average can be critical in one block against the barrier. Density has to be measured zone by zone, not as one number for the floor.
Crowd Analytics for Concert Venues and Stadiums
Density is what the license is written against. Flow is what sees a crush coming.
ASSET-RxCx gives concert venues and stadiums live crowd analytics: density, flow, crowd pressure and occupancy for every zone of the floor, plus the location of credentialed people such as VIPs, crew and security. LiDAR, cameras and wireless sensors are integrated into one system, and every alarm is logged for the post-event review.
- Integrated
- LiDAR
- Cameras
- Wireless sensors
- AI
SIMULATIONLive per zoneDensity, flow and pressure
AlarmsLogged for the review
- Whole floor zonedFront, mid and rear, each split left, center and right
- Anonymous crowdThe general crowd is measured as density and flow, never identities
- Credentialed peopleVIPs, band, crew and security located across the venue
- LoggedEvery alarm captured with the full picture for the post-event review
The challenge
Why crowd safety needs more than a head count.
A ticket scan tells you how many people came in. It does not tell you where they are standing, how tightly, or whether the crowd is starting to move as one.
Density with movement in it
Density alone does not injure people; density with movement in it does. Stop-and-go waves and counter-flow come before a crush, and they only show up in flow data.
Credentialed people get lost
VIPs, artists, crew and security move between the deck, backstage and the floor. Knowing a badge was scanned at a door is not knowing where that person is now.
ASSET-RxCx measures density and flow for every zone and locates credentialed people, in one live view.
See the approachFrom the ASSET-RxCx simulator
See the floor the way the safety officer does.
CRATUS models each venue before installation. The same views are used live during the event.
SIMULATION
SIMULATION
SIMULATIONSimulation with illustrative values. Live installations show measured values for your venue.
What the venue team sees
Live numbers for every zone, door and restricted area.
Each reading is available live, as a trend and in the incident log.
- Density per zonePeople per square meter and level of service, zone by zone.
- Crowd pressureDensity combined with movement, the early warning for turbulence.
- Stop-and-go wavesFlow patterns that precede a crush, flagged as they form.
- Time to criticalHow fast a zone is approaching its limit.
- Doors and gatesPeople in, out and net per door, plus tailgating against credentials.
- Occupancy vs licensePeople on the floor against licensed capacity.
- Restricted zonesWho is on the VIP deck or backstage, and unauthorized dwell.
- Incident logThe full picture at the moment an alarm fires, exportable for review.
Our approach
From sensors to a safe show.
ASSET-RxCx integrates LiDAR, cameras and wireless sensors with edge computing, software and AI, engineered as one system by one team.
Sensing
LiDAR measures the crowd as anonymous 3D points and keeps working in the dark and under show lighting. Cameras extend coverage where they help, and wireless sensors locate credentialed people. All of them feed one picture.
- LiDAR at stage, FOH and towers
- Cameras where they add coverage
- Wireless sensors for credentialed people
Edge computing
An edge computer at the site merges every sensor into one live picture and computes the analytics locally, so results, not raw sensor streams, leave the site over Ethernet, Wi-Fi or cellular.
- Multi-sensor fusion on site
- Analytics computed at the edge
- Ethernet, Wi-Fi or cellular
Software & dashboards
One live view of the floor for the safety officer and control room: zone readings, alarms, door counts, restricted areas and personnel, with automatic incident logging and export.
- Live floor view and zone table
- Alarms with suggested actions
- Incident log and export
AI
AI combines density, pressure, stop-and-go waves and counter-flow into a risk index, names the leading driver and estimates time to critical, so staff act before a zone reaches its limit.
- Stampede risk index
- Leading driver for each alarm
- Time-to-critical estimate
What we deliver
Crowd analytics for live events.
From one standing floor to a full stadium.
Zone-by-zone density
Density and level of service for every zone of the floor, not an average for the venue.
Sensing · Software
Flow and crowd pressure
Movement in the crowd measured alongside density, with pressure alarms before density alone would trip.
Sensing · AI
Doors, gates and tailgating
In, out and net per door, and bodies compared with credentials at controlled entrances.
Sensing · Software
Credentialed people
VIPs, artists, crew and security located across the venue, with alarms for anyone unlocated or in the wrong zone.
Sensing · Software
Occupancy and licensed capacity
People on the floor against licensed capacity, area over the limit and modeled clearance time.
Software
Incident log and review
Every alarm captured with zone readings, door counts and positions, exported for the post-event review.
Software
The ASSET-RxCx system
Built for the venue, rigged for the show.
Sensors are placed by viewpoint, not by count: stage, front of house and delay towers see the floor from different angles.
CRATUS
LiDAR crowd rig
Stage, FOH and towers
- Anonymous 3D points
- Works in the dark
- Under show lighting
Measures the crowd from several viewpoints so the front, middle and rear of the floor are all covered.
CRATUS
Cameras
Optional, integrated
- Extend the rear field
- Visual verification
- Same live view
Added where they extend coverage or let staff see what an alarm is about.
CRATUS
Wireless sensors
For credentialed people
- VIPs, crew, security
- Venue-wide location
- Restricted zones
Locate credentialed people continuously across the venue, including backstage and the VIP deck.
ASSET-Rx
Edge computer
ASSET-Rx EDGE
- Sensor fusion
- Zone analytics
- Runs on site
Fuses every sensor into one picture of the floor and computes the analytics at the venue.
ASSET-RxCx
Venue dashboard
Control room and mobile
- Zone table
- Alarms
- Door counts
The live floor view, alarms and readings for the safety officer and control room.
ASSET-RxCx
Incident log
Automatic capture
- Full picture at alarm
- Traces before and after
- Export
Records the whole picture when an alarm fires and exports it for the post-event review.
One system
Sensors, edge, software and AI from one team
CRATUS models the venue, places the sensors, runs the software and supports the event team. One point of contact from the first floor plan to the post-event review.
All CRATUS productsASSET-RxCxStack
AI
- Risk index
- Leading driver
- Time to critical
Software
- Live view
- Alarms
- Incident log
Edge
- Sensor fusion
- Zone analytics
- Door counts
Sensing
- LiDAR
- Cameras
- Wireless sensors
What to send us
These details let CRATUS model your venue before anything is installed.
- Venue type and capacity
- Standing floor and seating dimensions
- Stage position and rigging points
- Front-of-house and delay tower positions
- Doors, gates, vomitories and egress routes
- Restricted areas: VIP deck, backstage, pit
- Licensed capacity and density limits
- Existing cameras and access control
- Network at the venue
How we work
Simulated first, then installed.
Every venue is modeled with its layout, capacity and show profile before installation, so sensor positions and thresholds are set with evidence.
- 01
Venue details
Floor plan, capacity, doors, stage, rigging and restricted areas.
- 02
Simulation & coverage model
CRATUS simulates your venue at full house to place sensors and set zones and thresholds.
- 03
Install
Permanent installation or event rigging at stage, front of house and towers.
- 04
Commission
Zones, licensed limits, alarms and personnel groups set up and tested.
- 05
Operate & review
Live monitoring during the event, then the incident log and trends for the review.
Standards & practices
Measured against the limits you already work to.
ASSET-RxCx reports against the crowd safety references venues and authorities use.
- Green GuideGuide to Safety at Sports Grounds; standing density limits
- Fruin Level of ServicePedestrian density grades A to F
- Crowd turbulence researchPressure alarm based on published crowd disaster analysis
- NFPA 101Life Safety Code, occupant load and crowd managers
- GDPR / CCPAGeneral crowd measured anonymously
- IEC 60825-1Eye-safe laser classes
- IEC 60529Ingress protection for outdoor rigging
- ISA/IEC 62443Security for networks and devices
Licensed limits are set by the venue license and the authority having jurisdiction. ASSET-RxCx measures against them and documents events; it does not set or certify limits.
The basics
What is crowd analytics for venues?
Live measurement of where people are and how they move. ASSET-RxCx reports density, flow, crowd pressure and occupancy for every zone of the floor, plus door counts and the location of credentialed people.
Why measure flow and not only density?
Because density with movement in it is what injures people. Stop-and-go waves and counter-flow appear before a crush, so crowd pressure alarms can fire before density alone reaches its limit.
Does the system identify people in the crowd?
No. The general crowd is measured anonymously, as density and flow. Only credentialed people who carry a venue-issued sensor, such as VIPs, crew and security, are located individually.
Technology
Which sensors does ASSET-RxCx use?
LiDAR, cameras and wireless sensors, integrated into one system. LiDAR measures the crowd, cameras extend coverage and give visual verification, and wireless sensors locate credentialed people.
Does it work during a show with dark and strobing lights?
Yes. LiDAR supplies its own light, so darkness and show lighting do not stop the measurement. Cameras are used where lighting allows.
Why place sensors at stage, front of house and towers?
Different viewpoints see different parts of the floor. Sensors on one trim share the same sight lines and occlusions; spreading them out covers more of the crowd than adding more in one place.
Operations
What happens when an alarm fires?
The zone, the leading driver and the suggested action are shown to the operator, and the incident log captures the full picture: zone readings, traces before and after, door counts and personnel positions.
Can it be used for touring shows as well as permanent venues?
Yes. The system can be installed permanently or rigged for an event, and each venue is modeled before installation.
Can we test our venue before buying?
Yes. CRATUS simulates your venue with its layout, capacity and show profile, so you can see coverage and alarms before installation.
Working with CRATUS
How do we get a proposal?
Send us the site layout, what you need to measure and how the space is used. A CRATUS engineer replies with questions, a sensor layout and a phased plan.
Can you work with our integrator, security or IT team?
Yes. CRATUS works directly with operations teams, system integrators and IT departments, and provides network requirements, installation instructions and remote support during commissioning.
Talk to a CRATUS engineer
Planning crowd safety for your next season?
Send us the venue plan and capacity. A CRATUS engineer will reply with a simulation of your floor and a sensor plan.